Evolution of the interband absorption threshold with the density of a two-dimensional electron gas

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DOIResolve DOI: http://doi.org/10.1103/PhysRevB.54.R11082
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TypeArticle
Journal titlePhysical Review B: condensed matter and materials physics
Phys. Rev. B
Volume54
Issue16
PagesR11082R11085
AbstractWe have obtained absolute interband absorption spectra from a series of modulation-doped GaAs/Al 0.3 Ga 0.7As multiple quantum wells covering a wide range of two-dimensional electron densities. The evolution of the threshold line shape from an exciton to a Fermi-edge singularity is quantified. We discuss the influence of the doubly occupied bound state (X-) on the line shape and compare the results with realistic many-body calculations.
Publication date
AffiliationNational Research Council Canada; NRC Institute for Microstructural Sciences
Peer reviewedNo
NPARC number12338126
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Record identifier99e26398-2684-4a73-86d2-538254ab8fb8
Record created2009-09-10
Record modified2016-05-09
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